Controlling nanodomain morphology of epoxy thermosets templated by poly(caprolactone)-block-poly(dimethylsiloxane)-block-poly(caprolactone) ABA triblock copolymer,RSC Advances

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Controlling nanodomain morphology of epoxy thermosets templated by poly(caprolactone)-block-poly(dimethylsiloxane)-block-poly(caprolactone) ABA triblock copolymer
RSC Advances ( IF 3.9 ) Pub Date : 2018-01-18 00:00:00 , DOI: 10.1039/c7ra12826f
Jingyi Yang ₁ , Quan Zhou ₁ , Kang Shen ₁ , Ning Song ₁ , Lizhong Ni ₁

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In this paper, triblock copolymer was incorporated into epoxy to prepare nano thermosets. After studying the compatibility between polydimethylsiloxane (PDMS), polycaprolactone (PCL) and bisphenol A epoxy resin (E-54), poly(caprolactone)–poly(dimethylsiloxane)–poly(caprolactone) (PCL-b-PDMS-b-PCL) triblock copolymer was incorporated into bisphenol A epoxy resin (E-54) and cured with DDS. A nano structure was formed and the size of the spherical phase became larger with increasing PCL-b-PDMS-b-PCL. According to the fact that TGDDM/PCL was compatible and TGDDM/PDMS was incompatible during the curing reaction, the mechanism of nano structure formation was self-assembly. The factors of influencing nano structure formation were discussed with regard to different curing temperatures and accelerators. Curing kinetics was utilized to study the effect of accelerator on nano structure formation.

中文翻译：

控制以聚（己内酯）-嵌段-聚（二甲基硅氧烷）-嵌段-聚（己内酯）ABA三嵌段共聚物为模板的环氧树脂热固性材料的纳米域形态

在本文中，将三嵌段共聚物掺入环氧树脂中以制备纳米热固性材料。在研究了聚二甲基硅氧烷 (PDMS)、聚己内酯 (PCL) 和双酚 A 环氧树脂 (E-54) 之间的相容性后，聚（己内酯）-聚（二甲基硅氧烷）-聚（己内酯）（ PCL- b - PDMS- b -PCL）将三嵌段共聚物掺入双酚 A 环氧树脂 (E-54) 中并用 DDS 固化。随着PCL- b -PDMS- b的增加，形成了纳米结构并且球形相的尺寸变大-PCL。根据固化反应过程中TGDDM/PCL相容而TGDDM/PDMS不相容的事实，纳米结构形成的机理是自组装。讨论了不同固化温度和促进剂对纳米结构形成的影响因素。利用固化动力学研究促进剂对纳米结构形成的影响。

更新日期：2018-01-18

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